A. J. S. Brook, “Notice of a Silver Brooch with Black Letter Inscription and Ornamentation in Niello, the Property of Miss Steven of Bellahouston, and of a Large Brass Highland Brooch with Incised Ornamentation, the Property of Mrs W R Mitford, 33 Coates Gardens Edinburgh”, PSAS, vol. 23, pp. 192–199, Nov. 1889.